It’s name and scoring have changed several times, since it’s debut by the College Board in 1926. It used to called the Scholastic Aptitude Test, until it was later changed to Scholastic Assessment Test, then the SAT I: Reasoning Test, then the SAT Reasoning Test, then simply the SAT.

It is mandatory to be taken by students seeking admission to undergraduate schools. It is offered internationally in August, October, December, March, and May. In fall 2020, the SAT is also available internationally in September.

SAT Subject Tests™ are available internationally in August, October, December, May, and June. In fall 2020, Subjects Tests are also available internationally in November.

The SAT takes three hours to finish, plus 50 minutes for the SAT with essay, and as of 2019 costs US$49.50 (US$64.50 with the optional essay), excluding late fees, with additional processing fees if the SAT is taken outside the United States. Scores on the SAT range from 400 to 1600, combining test results from two 200-to-800-point sections: Mathematics, and Critical Reading and Writing.
Although taking the SAT, or its competitor the ACT, is required for freshman entry to many colleges and universities in the United States, many colleges and universities are experimenting with test-optional admission requirements and alternatives to the SAT and ACT.
Starting with the 2015–16 school year, the College Board began working with Khan Academy to provide free SAT preparation.